DE102004038446A1 - Switchable valve train element of an internal combustion engine - Google Patents
Switchable valve train element of an internal combustion engine Download PDFInfo
- Publication number
- DE102004038446A1 DE102004038446A1 DE102004038446A DE102004038446A DE102004038446A1 DE 102004038446 A1 DE102004038446 A1 DE 102004038446A1 DE 102004038446 A DE102004038446 A DE 102004038446A DE 102004038446 A DE102004038446 A DE 102004038446A DE 102004038446 A1 DE102004038446 A1 DE 102004038446A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- switching channel
- drive element
- valve train
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
Abstract
Ein schaltbares Ventiltriebselement (3) einer Brennkraftmaschine, welches hydraulisch ansteuerbar ist, mit einem in einer Bohrung des Maschinengehäuses von dem Nocken (5) einer Nockenwelle (6) axial verschiebbaren Ventilstößel (8) und einem an dem Ventilstößel (8) angrenzenden Schaltkanal (7), der mit einem Hydrauliköl gefüllt ist, weist erfindungsgemäß an dem Ventiltriebselement (3) eine Verbindung zwischen dem Schaltkanal (7) und einem Raum mit einem niedrigeren Druckniveau auf, verglichen mit dem Druck im Schaltkanal (7). Die Verbindung kann zwischen dem Schaltkanal (7) und dem Raum niedrigeren Druckniveaus über den Ventilstößel (8) hergestellt sein.One switchable valve train element (3) of an internal combustion engine, which is hydraulically controllable, with a in a bore of the machine housing of the cam (5) of a camshaft (6) axially displaceable valve tappet (8) and one on the valve lifter (8) adjacent switching channel (7), which is filled with a hydraulic oil, according to the invention on the valve train element (3) a connection between the switching channel (7) and a room with a lower pressure level compared to the pressure in the switching channel (7). The connection can be between the switching channel (7) and the space of lower pressure level above the valve lifter (8) be prepared.
Description
Gebiet der ErfindungTerritory of invention
Die Erfindung betrifft ein schaltbares Ventiltriebselement einer Brennkraftmaschine, welches hydraulisch ansteuerbar ist, mit einem in einer Bohrung des Maschinengehäuses von dem Nocken einer Nockenwelle axial verschiebbaren Ventilstößel und einem an dem Ventilstößel angrenzenden Schaltkanal, der mit einem Hydrauliköl gefüllt ist.The The invention relates to a switchable valve train element of an internal combustion engine, which is hydraulically controllable, with one in a bore of the machine housing from the cam of a camshaft axially displaceable valve tappet and one adjacent to the valve tappet Switching channel, which is filled with a hydraulic oil.
Hintergrund der Erfindungbackground the invention
Aus
der Druckschrift
Zusammenfassung der ErfindungSummary the invention
Der Erfindung liegt die Aufgabe zugrunde, das Ventiltriebselement so weiterzubilden, dass Variationen im Schaltverhalten sicher vermieden werden.Of the Invention is based on the object, the valve train element so to develop further that variations in switching behavior safely avoided become.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass an dem Ventiltriebselement eine Verbindung zwischen dem Schaltkanal und einem Raum mit einem niedrigeren Druckniveau, verglichen mit dem Druck im Schaltkanal, geschaffen ist. Dabei kann die Verbindung zwischen dem Schaltkanal und dem Raum niedrigeren Druckniveaus über den Ventilstößel hergestellt sein.These Task is inventively characterized solved, that at the valve drive element, a connection between the switching channel and a room with a lower pressure level compared to the pressure in the switching channel, is created. This can be the connection between the switching channel and the lower pressure level space over the Valve tappets produced be.
Auf diese Weise werden Luft und/oder verschäumtes Hydrauliköl aus dem Schaltkanal ausgespült, so dass diese keine Variationen im Schaltverhalten hervorrufen können und somit das Ziel der Erfindung erreicht wird. Die Verbindung zwischen dem Schaltkanal und dem Raum mit niedrigerem Druckniveau muß so ausgelegt sein, dass die Reaktionszeit des Schaltvorganges nicht oder nur unwesentlich beeinflusst wird. Da dies bei der Erfindung über die Bewegung des Ventilstößels selbst erreicht wird, erfolgt eine Spülung des Schaltkanals nur während weniger Winkelgrade des Nockens.On this way, air and / or foamed hydraulic oil are released from the Switching channel flushed out, so that they can not cause variations in the switching behavior and Thus, the object of the invention is achieved. The connection between the switching channel and the space with lower pressure level must be designed be that the reaction time of the switching process is not or only is negligibly affected. As is the case with the invention about the movement of the valve stem itself is reached, a rinse takes place of the switching channel only during less degrees of angle of the cam.
Zur Herstellung der Verbindung von dem Schaltkanal zu dem Raum niedrigeren Druckniveaus kann eine Längsnut an der Mantelfläche des Ventilstößels angeordnet sein, welche über einen Spülkanal, beispielsweise eine Radialbohrung, mit einem Innenraum des Ventilstößels verbunden ist. Dabei kann an einem Ende der Längsnut eine das Ausströmen von Luft und/oder verschäumtem Hydrauliköl aus dem Schaltkanal ermöglichende Übertrittsstelle ausgebildet sein.to Making the connection from the switching channel to the lower room Pressure levels can be a longitudinal groove on the lateral surface arranged the valve stem to be over a flushing channel, For example, a radial bore, connected to an interior of the valve stem is. It can at one end of the longitudinal groove a the outflow of Air and / or foamed Hydraulic oil off formed the switching channel enabling crossing point be.
Kurze Beschreibung der ZeichnungShort description the drawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigenOne embodiment The invention is illustrated in the drawing and will be described below described in more detail. Show it
Ausführliche Beschreibung der ZeichnungFull Description of the drawing
Eine
in
Wie
Denkbar
sind auch andere konstruktive Anordnungen, z. B. des Spülkanals
- 11
- VerdrehsicherungsbrückeVerdrehsicherungsbrücke
- 22
- VentiltriebselementValve train element
- 33
- VentiltriebselementValve train element
- 44
- Rollerole
- 55
- Nockencam
- 66
- Nockenwellecamshaft
- 77
- Schaltkanalswitching channel
- 88th
- Ventilstößeltappet
- 99
- Innenrauminner space
- 1010
- Längsnutlongitudinal groove
- 1111
- ÜbertrittsstelleCrossing point
- 1212
- Spülkanalirrigation channel
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004038446A DE102004038446A1 (en) | 2004-08-07 | 2004-08-07 | Switchable valve train element of an internal combustion engine |
US11/186,331 US7458352B2 (en) | 2004-08-07 | 2005-07-21 | Switchable valve drive element of an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004038446A DE102004038446A1 (en) | 2004-08-07 | 2004-08-07 | Switchable valve train element of an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004038446A1 true DE102004038446A1 (en) | 2006-03-16 |
Family
ID=35756196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004038446A Withdrawn DE102004038446A1 (en) | 2004-08-07 | 2004-08-07 | Switchable valve train element of an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
US (1) | US7458352B2 (en) |
DE (1) | DE102004038446A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080190394A1 (en) * | 2007-02-13 | 2008-08-14 | Edelmayer Thomas C | Cylinder head with multiple oil passages and method for manufacture |
US8236046B2 (en) * | 2008-06-10 | 2012-08-07 | Boston Scientific Scimed, Inc. | Bioerodible endoprosthesis |
WO2015106051A1 (en) * | 2014-01-12 | 2015-07-16 | Eaton Corporation | Engine valve lifter oil flow control and anti-rotation feature |
CN108474273B (en) * | 2015-12-18 | 2021-05-11 | 伊顿智能动力有限公司 | Engine valve lifter |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10109954A1 (en) * | 2001-03-01 | 2002-09-05 | Ina Schaeffler Kg | Valve train of an internal combustion engine |
DE10119366A1 (en) * | 2001-04-20 | 2002-10-24 | Ina Schaeffler Kg | Hydraulic system for internal combustion engine has coupling, valve drive element, track, hole, ducts, hydraulic pump, connection |
US6584942B1 (en) * | 2002-05-29 | 2003-07-01 | General Motors Corporation | Cylinder deactivation apparatus with vapor purge |
US6688266B1 (en) * | 2003-03-17 | 2004-02-10 | Eaton Corporation | Pressurized sealing groove for deactivating roller-follower |
DE60008936T2 (en) * | 1999-01-11 | 2004-08-12 | Honda Giken Kogyo K.K. | Valve control device for an internal combustion engine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3838669A (en) * | 1972-08-11 | 1974-10-01 | Johnson Products Inc | Hydraulic lash adjuster |
US3921609A (en) * | 1974-08-16 | 1975-11-25 | Rhoads Jack L | Variable duration hydraulic valve tappet |
US6497207B2 (en) * | 2000-10-20 | 2002-12-24 | Delphi Technologies, Inc. | Deactivation roller hydraulic valve lifter |
DE10212522A1 (en) | 2002-03-21 | 2003-10-02 | Ina Schaeffler Kg | Valve train for an internal combustion engine |
US6802288B2 (en) * | 2002-04-22 | 2004-10-12 | Delphi Technologies, Inc. | Deactivation hydraulic valve lifter having a pressurized oil groove |
-
2004
- 2004-08-07 DE DE102004038446A patent/DE102004038446A1/en not_active Withdrawn
-
2005
- 2005-07-21 US US11/186,331 patent/US7458352B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60008936T2 (en) * | 1999-01-11 | 2004-08-12 | Honda Giken Kogyo K.K. | Valve control device for an internal combustion engine |
DE10109954A1 (en) * | 2001-03-01 | 2002-09-05 | Ina Schaeffler Kg | Valve train of an internal combustion engine |
DE10119366A1 (en) * | 2001-04-20 | 2002-10-24 | Ina Schaeffler Kg | Hydraulic system for internal combustion engine has coupling, valve drive element, track, hole, ducts, hydraulic pump, connection |
US6584942B1 (en) * | 2002-05-29 | 2003-07-01 | General Motors Corporation | Cylinder deactivation apparatus with vapor purge |
US6688266B1 (en) * | 2003-03-17 | 2004-02-10 | Eaton Corporation | Pressurized sealing groove for deactivating roller-follower |
Also Published As
Publication number | Publication date |
---|---|
US20060027193A1 (en) | 2006-02-09 |
US7458352B2 (en) | 2008-12-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER KG, 91074 HERZOGENAURACH, DE |
|
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 H, DE |
|
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20110809 |